一、通过_source显示指定的字段

{
  "_source": [
    "showed_field1",
    "showed_field12"
  ],
  "query": { // 非必要
    "query_string": {
      "query": "query_content"
    }
  }
}

二、排除指定字段

{
  "_source": {
    "exclude": [ // excludes优先级>includes优先级
      "exclude_field1"
    ]
  },
  "query": {
    "query_string": {
      "query": "query_content"
    }
  }
}

三、不展示索引原始字段

{
  "_source": false,
  "query": { 
    "query_string": {
      "query": "query_content"
    }
  }
}

四、显示指定路径内容

GET /index_name/_search?filter_path=hits.hits._source,hits.total

{
    "took": 2,
    "hits": {
        "hits": [
            {
                "_source": {
                    "id": "dwd656"
                }
            }
        ]
    }
}